      /* ↓ ↓ ↓ Loading的js代码 ↓ ↓ ↓*/
      document.onreadystatechange = function(){
        var loading = document.getElementById("loading");
        if(document.readyState == "complete"){
            loading.style.display = "none"
            loading = null
        }else
        loading.style.display ="lock";		
    }
  /* ↑ ↑ ↑Loading的js代码 ↑ ↑ ↑*/